The 3I-1813-5B-L Pistol / Optics Case is injection molded from ultra high-strength polypropylene copolymer resin, material specified by the U.S. military for cases and containers. It features a gasketed, water and dust-tight submersible design, meeting military standard MIL-C-4150J. The automatic ambient pressure equalization valve self-regulates for different altitudes meeting military standards MIL-STD-648C and IP67. It is resistent to UV, solvents, corrosion, fungus and impact damage, surpassing military standard MIL-STD-810F. The case features a continous molded-in hinge with stainless stell pin, a patent pending "trigger release" latch system, and a comfortable, snap-down, rubber over-molded handle. The 3I-1813-5B-L is comfortable and durable in transport and secure and stable in storage thanks to SKB"s interlocking case design. With two padlockable eyelets, the 3I-1813-5B-L is completely secure. Capable of accommodating 3-6 handguns with its layered convoluted foam interior, the 3I-1813-5B-L is backed by SKB"s Unconditional Lifetime Warranty.